Kimi K2.5 launch post cover

Cost/1M tokens

input
$0.50
cached
$0.15
output
$2.50
Context
262Ktokens
Released
9mo ago
Size
1Tparameters

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Arena leaderboards and other sourced evaluations appear below; missing scores are not zero.

How it ranks

Against its predecessor, similarly priced models and the models ranked around it.

DeepSWE 1.1

Best pass@1 per model · Higher is better

Not evaluated in DeepSWE 1.1

Arena Text

Best Arena rating per model · Higher is better

Arena #81

  1. 1452
    Gemma 4 31BNearby rank
  2. 1450
    Claude Opus 4.1Nearby rank
  3. 1450
    Kimi K2.5
  4. 1448
    Step 5 PreviewNearby rank
  5. 1448
    MiMo-V2-ProNearby rank
  6. 1441
    GLM 4.7Similar price
  7. 1426
    Nemotron 3 UltraSimilar price
  8. 1423
    Mistral Large 4Similar price
  9. 1421
    R1 0528Similar price

Ahead of 3 of 4 similarly priced models

Arena WebDev

Best Arena rating per model · Higher is better

Arena #90

  1. 1632
    Hy4 previewSimilar price
  2. 1564
    Mistral Large 4Similar price
  3. 1448
  4. 1438
    MiMo-V2.5Nearby rank
  5. 1437
  6. 1436
    Kimi K2.5
  7. 1435
  8. 1435
    GLM 5Nearby rank
  9. 1435
    GLM 4.7Similar price

Ahead of 0 of 4 similarly priced models

Arena Vision

Best Arena rating per model · Higher is better

Arena #51

  1. 1266
  2. 1256
    Seed 2.0 ProNearby rank
  3. 1255
    GPT-5.6 LunaNearby rank
  4. 1252
    Kimi K2.5
  5. 1251
    GPT-5.1Nearby rank
  6. 1250
    GPT-5.4 MiniNearby rank
  7. 1231
    Mistral Large 4Similar price
  8. 1153
    GLM 4.5VSimilar price
  9. 1121

Ahead of 3 of 4 similarly priced models

Arena Search

Best Arena rating per model · Higher is better

Not ranked on Arena Search yet

Arena Document

Best Arena rating per model · Higher is better

Arena #39

  1. 1468
    Gemini 3.7 FlashSimilar price
  2. 1448
  3. 1446
    Qwen3.7 PlusSimilar price
  4. 1438
    Kimi K2.5
  5. 1435
    MiniMax M3Similar price
  6. 1433
    Gemini 2.5 ProNearby rank
  7. 1406
    GLM 5V TurboSimilar price

Ahead of 1 of 4 similarly priced models

Agent Arena

Best IPS score per model · Higher is better

Not ranked on Agent Arena yet

ARC-AGI-2

Best score per model · Higher is better

#55 of 85

  1. 17.6%
    GPT-5.1Nearby rank
  2. 13.6%
  3. 11.8%
    Kimi K2.5
  4. 10.3%
  5. 9.9%
    GPT-5Nearby rank
  6. 4.9%
    GLM 5Similar price
  7. 1.3%
  8. 1.1%
    R1 0528Similar price
  9. 0.0%
    GPT-4.1 MiniSimilar price

Ahead of 4 of 4 similarly priced models

Humanity's Last Exam

Best score per model · Higher is better

#15 of 34

  1. 44.5%
    Gemini 3.8 FlashSimilar price
  2. 27.8%
    GPT-5.2Nearby rank
  3. 25.3%
    GPT-5Nearby rank
  4. 24.4%
    Kimi K2.5
  5. 23.7%
    GPT-5.1Nearby rank
  6. 21.6%
  7. 19.4%
    GPT-5 MiniSimilar price
  8. 8.3%
    GLM 4.5Similar price
  9. 4.5%
    Mistral Medium 3Similar price

Ahead of 3 of 4 similarly priced models

OSWorld

Best score per model · Higher is better

#4 of 10

  1. 72.1%
  2. 66.3%
    Claude Opus 4.5Nearby rank
  3. 63.3%
    Kimi K2.5
  4. 62.9%
  5. 43.9%
    Claude Sonnet 4Nearby rank
  6. 5.0%

Ahead of 1 of 1 similarly priced model

SimpleQA Verified

Best score per model · Higher is better

#58 of 87

  1. 66.8%
  2. 47.0%
  3. 35.5%
  4. 34.9%
    Kimi K2.6Nearby rank
  5. 34.3%
    Kimi K2.5
  6. 34.2%
    GLM 5.2Nearby rank
  7. 34.0%
    GLM 5.1Nearby rank
  8. 32.2%
    GLM 4.7Similar price
  9. 20.0%
    Mistral Large 4Similar price

Ahead of 2 of 4 similarly priced models

SWE-bench Verified

Best score per model · Higher is better

#18 of 35

  1. 77.6%
  2. 75.4%
  3. 74.8%
    GPT-5.3-CodexNearby rank
  4. 74.2%
    GLM 5.1Nearby rank
  5. 73.8%
    Kimi K2.5
  6. 73.8%
    GPT-5.2Nearby rank
  7. 73.6%
    GPT-5Nearby rank
  8. 64.7%
    GPT-5 MiniSimilar price
  9. 57.9%
    Qwen3.6 PlusSimilar price

Ahead of 2 of 4 similarly priced models

Terminal Bench

Best score per model · Higher is better

#25 of 49

  1. 64.3%
  2. 61.6%
    GPT-5.1-Codex-MiniSimilar price
  3. 57.3%
    Grok 4.20Similar price
  4. 45.1%
    MiniMax M2.7Nearby rank
  5. 44.3%
    GPT-5-CodexNearby rank
  6. 43.2%
    Kimi K2.5
  7. 42.7%
    MiniMax M2.5Nearby rank
  8. 39.6%
    DeepSeek V3.2Nearby rank
  9. 33.4%
    GLM 4.7Similar price
  10. 27.8%
    Kimi K2 InstructPredecessor

+15.4 pts vs Kimi K2 Instruct (predecessor) · Ahead of 1 of 4 similarly priced models

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

All published scores

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

Arena ratings: Arena (lmarena-ai/leaderboard-dataset), licensed CC BY 4.0. Ratings come from pairwise human votes and are only comparable within one leaderboard; the interval is Arena's 95% confidence interval. Model names are matched to the Vertical Tabs catalog.

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